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Hanson Dynamic Ea 3

Hanson Dynamic Earth Chapter 3 Vocabulary Words

TermDefinition
convection current movement of materials caused by temperature changes
convergent boundary plate boundary where the plates come together
divergent boundary plate boundary where the plates move apart
fossil the preserved remains of an organism
lithosphere topmost solid part of the earth; includes some of the mantle and the crust
mid-ocean ridge undersea mountain chain
ocean-floor spreading old ocean floor is pushed apart and new floor is formed
Pangea name given to the land when it was one big landmass
plate moving pieces that make up the lithosphere
strike-slip boundary plates slide past each other horizontally
subduction crust plunges back into the interior of the earth
tectonics movements of the plates that shape the Earth's crust
theory of continental drift continents are drifting apart
theory of plate tectonics continents are drifting apart and new ocean floor is forming
transform fault fault across a mid-ocean ridge
trench place where old ocean floor is being subducted
Alfred Wegener theory of continental drift; continents had once been joined together and had since moved apart
glossopteris an extinct organism whose fossils provide evidence for continental drift
rift valley a valley formed when the block of land between two normal faults slides downward
oceanic plate thin crust/plate under the ocean
continental plate thicker plates under the continents
Created by: marydykstra
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